

P355Q steel Size:
Thickness:  6MM to 300MM,
Width:  1500mm to 4050mm,
Length:  3000mm to 15000mm
P355Q steel  Application:
P355Q  Grade has a good weldable and used in high temperature equipment and pressure  vessel.
Chemical Composition:
| Main chemical elements composition of P355Q | |||||||
| C | Si | Mn | P | S | B | N | Cr | 
| 0.16 | 0.40 | 1.50 | 0.025 | 0.015 | 0.005 | 0.015 | 0.30 | 
| Cu | Mo | Nb | Ni | Ti | V | Zr | |
| 0.30 | 0.25 | 0.05 | 0.50 | 0.03 | 0.06 | 0.05 | |
| Thickness (mm) | |||
| P355Q | ≤ 50 | > 50 ≤ 100 | > 100 | 
| Yield strength (≥Mpa) | 355 | 335 | 315 | 
| 
 | ≤ 100 | > 100 | |
| Tensile strength (Mpa) | 490-630 | 450-590 | |